6 4 



MANUAL OF ZOOLOGY 







• *h<^V o 





/ 



f mmm 



\ ■■■■X;-. .-L~i ; • A. I'.-y/KfS 



Fig. 28. — Various forms of epithelium, a, ciliated epithelium; 6, columnar; d, sur- 

 face view of the same; c, tessellated; e, the same from the surface; _f t flagellate 

 epithelium with collars; g, flagellate epithelium without collars; h, epithelium 

 of intestine with pseudopodia; i, stratified epithelium; k, deric epithelium of a 

 marine planarian with pigment cells, rod cells, and sub-epithelial glands. (From 

 Lang's Comparative Anatomy.) 



